diff --git a/experiments/causal-discovery/requirements.txt b/experiments/causal-discovery/requirements.txt
index 524d4b2..5e77111 100644
--- a/experiments/causal-discovery/requirements.txt
+++ b/experiments/causal-discovery/requirements.txt
@@ -31,7 +31,7 @@ mistune==0.8.4
 nbconvert==5.6.1
 nbformat==5.0.4
 networkx==2.4
-notebook==6.0.3
+notebook==6.4.1
 numpy==1.18.1
 pandas==1.0.1
 pandocfilters==1.4.2